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Allowance for Credit Losses - Summary of Amortized Cost Basis of Nonaccrual Loans and Loans Past due Over 89 Days Still Accruing (Detail) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022
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Financing Receivable, Nonaccrual [Line Items] |  |
Nonaccrual with No Allowance for Credit Loss | $ 6,304 |
Nonaccrual with a related Allowance for Credit Loss | 733 | $ 1,918
Total Nonaccrual | 7,037 |
Loans past due over 89 days still accuring | 213 |
Agriculture and Farmland [Member] |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Nonaccrual with No Allowance for Credit Loss | 0 |
Nonaccrual with a related Allowance for Credit Loss | 0 |
Total Nonaccrual | 0 |
Loans past due over 89 days still accuring | 0 |
Construction [Member] |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Nonaccrual with No Allowance for Credit Loss | 191 |
Nonaccrual with a related Allowance for Credit Loss | 0 |
Total Nonaccrual | 191 |
Loans past due over 89 days still accuring | 0 |
Commercial and Industrial [Member] |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Nonaccrual with No Allowance for Credit Loss | 53 |
Nonaccrual with a related Allowance for Credit Loss | 8 |
Total Nonaccrual | 61 |
Loans past due over 89 days still accuring | 58 |
Multifamily [Member] |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Nonaccrual with No Allowance for Credit Loss | 0 |
Nonaccrual with a related Allowance for Credit Loss | 0 |
Total Nonaccrual | 0 |
Loans past due over 89 days still accuring | 0 |
Owner Occupied [Member] |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Nonaccrual with No Allowance for Credit Loss | 2,465 |
Nonaccrual with a related Allowance for Credit Loss | 83 |
Total Nonaccrual | 2,548 |
Loans past due over 89 days still accuring | 6 |
Non-owner Occupied [Member] |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Nonaccrual with No Allowance for Credit Loss | 948 |
Nonaccrual with a related Allowance for Credit Loss | 281 |
Total Nonaccrual | 1,229 |
Loans past due over 89 days still accuring | 0 |
First Liens [Member] |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Nonaccrual with No Allowance for Credit Loss | 2,346 |
Nonaccrual with a related Allowance for Credit Loss | 361 |
Total Nonaccrual | 2,707 |
Loans past due over 89 days still accuring | 149 |
Second Liens and Lines of Credit [Member] |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Nonaccrual with No Allowance for Credit Loss | 294 |
Nonaccrual with a related Allowance for Credit Loss | 0 |
Total Nonaccrual | 294 |
Loans past due over 89 days still accuring | 0 |
Municipal [Member] |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Nonaccrual with No Allowance for Credit Loss | 0 |
Nonaccrual with a related Allowance for Credit Loss | 0 |
Total Nonaccrual | 0 |
Loans past due over 89 days still accuring | 0 |
Consumer [Member] |  |
Financing Receivable, Nonaccrual [Line Items] |  |
Nonaccrual with No Allowance for Credit Loss | 7 |
Nonaccrual with a related Allowance for Credit Loss | 0 |
Total Nonaccrual | 7 |
Loans past due over 89 days still accuring | $ 0 |

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- Definition Amortized cost excluding accrued interest, of financing receivable on nonaccrual status. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 16 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-16 + Details
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